Anti-icing Valve.
 Figure 401/TASK 21-61-41-991-001

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 Anti-icing Valve.
 Figure 401A/TASK 21-61-41-991-001-A 
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R  Anti-icing Valve. 
R  Figure 401B/TASK 21-61-41-991-001-B 
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 (5) Remove the nut (15), the washer (17), the screw (9) and disconnect the bonding strap (13).
 (6) Remove the clamps (6) and (10) and the anti-ice valve (11).
 (7) Remove the packings (2) and (7).
 (8) Put blanking plugs on the disconnected line ends. 
R  **ON A/C 301-399,
 Subtask 21-61-41-020-050-A
 A. Removal of the Anti-ice Valve
 (1) Disconnect the electrical connector (3).
 (2) Put blanking caps on the disconnected electrical connectors.
 (3) Disconnect the sense line connectors (4), (5), (14) and (18) and the pneumatic sense hose (9).
 (4) Put blanking plugs on the disconnected line ends.
 (5) Remove the nut (17), the washer (15), the screw (11) and disconnect the bonding strap (10).
 (6) Remove the clamps (6) and (12) and the anti-ice valve (13).
 (7) Remove the packings (2) and (7).
 (8) Put blanking plugs on the disconnected line ends. 
R  **ON A/C 401-499, 
R  Subtask 21-61-41-020-050-B 
R  A. Removal of the Anti-ice Valve 
R  (1) Disconnect the electrical connector (13). 
R  (2) Put blanking caps on the disconnected electrical connectors. 
R R  (3) Remove the nut (8), the washer (9), the screw (7) and disconnect the bonding strap (11). 

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R (4) Remove the clamps (4) and (12) and the anti-ice valve (3).
R (5) Remove the packings (2) and (5).
R (6) Put blanking plugs on the disconnected line ends.

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 TASK 21-61-41-400-001
 Installation of the Anti-Ice Valve 17HH (37HH)
 WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______
 FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
 HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.

 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific Torque Wrench : range 0.00 to 1.20 m.daN
 (0.00 to 9.00 lbf.ft)
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 04-014A USA MIL-PRF-907
 HIGH TEMPERATURECOMPOUND (Ref. 20-31-00)
 Material No. 06-007 USA SS-G-659
 GRAPHITE POWDER DRY LUBRICANT (Ref. 20-31-00)

 C. Expendable Parts
 -------------------------------------------------------------------------------FIG.ITEM |DESIGNATION |IPC-CSN -------------------------------------------------------------------------------
2 packing 21-52-03 27B-050 R 5 packing 21-52-03 27B-050 7 packing 21-52-03 27B-050
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 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
12-33-21-618-001 12-33-21-618-001 20-28-00-912-004 21-52-00-200-003  Pre-conditioning through the HP Ground ConnectionPre-conditioning with the APUElectrical Bonding of Components With Conductive Bolts and Screws and Bonding Straps in the Fuselage and in the Wings (this does not include the tanks)-Detailed Visual Inspection of the Anti-Ice Valve Sense-Lines
 21-61-00-710-001 24-41-00-861-002  Operational Test of the Pack Temperature-Control SystemEnergize the Aircraft Electrical Circuits from the External Power
 24-41-00-862-002  De-energize the Aircraft Electrical Circuits Supplied from the External Power
 53-35-13-000-002  Removal of the Quick-Release Access Panels from the
　
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